If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D




Comment for Type of Reporting Person:
Row 1 -- Yuao Wu is also known as Michael Wu and was listed in the initial Schedule 13D (as defined below) as "Yuao Wu (Michael)". Rows 7 through 11 -- As of the date of this Amendment, the aggregate amount beneficially owned by Mr. Yuao Wu represents (i) 36,233,237 Class B Ordinary Shares held by Mars Wayfinder Limited, (ii) 20,888,979 Class A Ordinary Shares held by Amber Fort Limited, (iii) 2,287,892 Class A Ordinary Shares held by Amber Primary Unit Holding Limited, (iv) 6,698,479 Class A Ordinary Shares held by Digital Future Alliance Limited, (v) 4,620,646 Class A Ordinary Shares held by Amber Alliance Limited and (vi) 23,469,189 Class B Ordinary Shares held directly by Mr. Wu. Each Class B Ordinary Share is convertible into one Class A Ordinary Share at any time at the option of the holder thereof. Each Class B Ordinary Share is entitled to 30 votes per share, and each Class A Ordinary Share is entitled to one vote per share. Mars Wayfinder Limited holds all of the voting shares of Amber Fort Limited, representing all of its voting power, but does not wholly own Amber Fort Limited. Mr. Wu is the sole shareholder of Mars Wayfinder Limited and Amber Primary Unit Holding Limited, the sole voting shareholder of Digital Future Alliance Limited and Amber Alliance Limited and the sole director of each of Amber Fort Limited, Amber Primary Unit Holding Limited, Digital Future Alliance Limited, Amber Alliance Limited and Mars Wayfinder Limited and may be deemed to beneficially own the shares held by each such entity. Mr. Wu disclaims beneficial ownership of the shares held through those entities except to the extent of his pecuniary interest therein. Row 13 -- Calculated in accordance with Rule 13d-3(d)(1)(i) on the basis of (i) 432,954,386 Class A Ordinary Shares issued and outstanding as of March 31, 2026 (excluding the Class A ordinary shares held by JPMorgan Chase Bank N.A., the Issuer's depositary, underlying the share-based awards reserved for issuance under certain employee incentive plans of the Issuer), as reported in the Issuer's annual report on Form 20-F filed on May 13, 2026 and stated by the Issuer to remain unchanged as of the date of this Amendment, plus (ii) 59,702,426 Class B Ordinary Shares deemed converted into Class A Ordinary Shares solely for purposes of this calculation.


SCHEDULE 13D




Comment for Type of Reporting Person:
Rows 8, 10 and 11 -- As of the date of this Amendment, Amber Fort Limited's beneficial ownership represents 20,888,979 Class A Ordinary Shares it holds directly. Mars Wayfinder Limited holds all of the voting shares of Amber Fort Limited, representing all of its voting power, but does not wholly own Amber Fort Limited. Accordingly, Mars Wayfinder Limited may be deemed to beneficially own these Class A Ordinary Shares. Mr. Wu is the sole shareholder and sole director of Mars Wayfinder Limited and the sole director of Amber Fort Limited. Row 13 -- Calculated in accordance with Rule 13d-3(d)(1)(i) on the basis of 432,954,386 Class A Ordinary Shares issued and outstanding as of March 31, 2026 (excluding the Class A Ordinary Shares held by JPMorgan Chase Bank N.A., the Issuer's depositary, underlying the share-based awards reserved for issuance under certain employee incentive plans of the Issuer), as reported in the Issuer's annual report on Form 20-F filed on May 13, 2026 and stated by the Issuer to remain unchanged as of the date of this Amendment.


SCHEDULE 13D




Comment for Type of Reporting Person:
Rows 8, 10 and 11 -- As of the date of this Amendment, Mars Wayfinder Limited's beneficial ownership represents (i) 36,233,237 Class B Ordinary Shares it holds directly and (ii) 20,888,979 Class A Ordinary Shares held by Amber Fort Limited. Mars Wayfinder Limited holds all of the voting shares of Amber Fort Limited, representing all of its voting power, but does not wholly own Amber Fort Limited. Each Class B Ordinary Share is convertible into one Class A Ordinary Share at any time at the option of the holder thereof. Mr. Wu is the sole shareholder and sole director of Mars Wayfinder Limited. Row 13 -- Calculated in accordance with Rule 13d-3(d)(1)(i) on the basis of (i) 432,954,386 Class A Ordinary Shares issued and outstanding as of March 31, 2026 (excluding the Class A ordinary shares held by JPMorgan Chase Bank N.A., the Issuer's depositary, underlying the share-based awards reserved for issuance under certain employee incentive plans of the Issuer), as reported in the Issuer's annual report on Form 20-F filed on May 13, 2026 and stated by the Issuer to remain unchanged as of the date of this Amendment, plus (ii) 36,233,237 Class B Ordinary Shares deemed converted into Class A Ordinary Shares solely for purposes of this calculation.


SCHEDULE 13D


 
Yuao Wu
 
Signature:/s/ Yuao Wu
Name/Title:Yuao Wu
Date:10/28/2026
 
Amber Fort Limited
 
Signature:/s/ Yuao Wu
Name/Title:Yuao Wu, Director
Date:10/28/2026
 
Mars Wayfinder Limited
 
Signature:/s/ Yuao Wu
Name/Title:Yuao Wu, Director
Date:10/28/2026

 

Exhibit 99.1

 

JOINT FILING AGREEMENT

 

Yuao Wu, Amber Fort Limited and Mars Wayfinder Limited agree under Rule 13d-1(k)(1) of the Securities Exchange Act of 1934, as amended, to submit jointly the accompanying Schedule 13D concerning the Class A ordinary shares, par value $0.001 per share, of Amber International Holding Limited, and subsequent amendments signed by the persons on whose behalf they are filed. This agreement may be filed as an exhibit to that Schedule 13D.

 

Each signatory is responsible for timely filing and for the accuracy and completeness of its own information. A signatory is responsible for another signatory's information only if it knows or has reason to believe that the information is inaccurate.

 

This agreement takes effect upon the accompanying filing and supersedes the joint filing agreement dated May 29, 2026 between Yuao Wu and Amber Fort Limited. Joint filing alone does not admit the existence of a group under Section 13(d).

 

Separate counterparts may be signed and together constitute one agreement.

 

Dated: 10-28-2026

 

YUAO WU  
   
By: /s/ Yuao Wu  
Name: Yuao Wu  
   
AMBER FORT LIMITED  
   
By: /s/ Yuao Wu  
Name: Yuao Wu    Title: Director  
   
MARS WAYFINDER LIMITED  
   
By: /s/ Yuao Wu  
Name: Yuao Wu    Title: Director